Founded in 1967, Comtech Systems, Inc. has spent over 50 years designing and implementing cutting-edge solutions to the toughest communications challenges worldwide ...
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Comtech Systems, Inc. is the world leader in troposcatter communications, with systems deployed globally for both commercial and military applications. Comtech troposcatter components are designed from the ground up specifically for troposcatter applications, providing the highest level of performance in the industry. Our equipment is currently operating in Europe, Africa, the Middle East, Asia, and South America, in a variety of environments ranging from the extremes of the arctic and deserts, to maritime and tropical settings.

For over 30 years, Comtech has been providing communications systems specifically developed for the world’s most demanding applications, including remote oil exploration, air defense systems and C4ISR Command and Control. Comtech’s proven equipment and design expertise are backed up by proven expertise in installation, support, and customer-specific training.
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From brochures to white papers to ebooks and more, Comtech Systems Inc. provides a variety of resources related to troposcatter and telecommunications solutions.

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The World’s Most Advanced Mobile Troposcatter Systems

Comtech mobile troposcatter systems have been deployed around the world, in diverse conditions ranging from scorching deserts to rainy jungles and the freezing arctic.

These systems are configured for transit cases, trailers, and vehicle-based platforms to meet the unique requirements of Comtech’s customers.
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The World Leader in Digital Troposcatter Systems

For over 30 years, Comtech has been providing communications systems specifically developed for the world’s most demanding applications, including remote oil exploration, air defense systems and C4ISR Command and Control.
Click here for more.

Who We Are

Founded in 1967 as Comtech Laboratories, Comtech Systems, Inc. has spent over 50 years designing and implementing cutting-edge solutions to the toughest communications challenges worldwide. In addition to the US military, our customers include foreign governments and militaries across the globe. Additionally, we provide remote communication solutions to the commercial sector, including some of the world’s largest energy companies, such as Royal Dutch Shell, Petronas, and PEMEX.

Troposcatter Overview

Advanced Troposcatter Systems provide high capacity, low-latency data links for over-the-horizon distances, without theneed to rely on satellites ormultiple line-of-sight repeaters. They also provide a level of reliability and availability that matches or exceeds other communication formats, such as line of sight microwave and satellite communications. These systems have little in common with the troposcatter(tropo) equipment developed for long-haul communications from the 1950s to the 1980s, much like computers today bear little resemblance to thecomputers of that era. The common element is that all troposcatter systems function by using the non-homogenous elements present in the lowest level of the atmosphere— such as water vapor, dust, and atmospheric variations— to scatter a small portion of the transmitted energy forward in a predictable manner.

A troposcatter system is a point-to-point link that requires a terminal on each end, with each terminal both transmitting and receiving. Terminals can range in size from a portable transit case system, to a vehicle-mounted system or large fixed installation. The antenna(s) at each terminal are aimed at a fixed point in the troposphere, generally slightly above the horizon. The region where the antenna beams intersect is known as the “Common Volume.”. The Common Volume is where this predictable scattering phenomena occurs.

Due to the nature of troposcatter propagation, only a tiny portion of the energy is scattered forward in a usable manner. The vast majority of energy passes on into space and is lost, and a small amount of non-useable scatter energy is lost as it disperses in other directions. A troposcatter system uses the remaining energy to create a stable and secure data link. For a full overview of Troposcatter technology,
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MTTS

Comtech’s Modular Transportable Transmission System [MTTS] is the most flexible mobile troposcatter terminal available. The main elements of the MTTS are the Modem Converter Case, which contains the CS67500 Digital Troposcatter Modem and the CS4400 Frequency Converter System, and the RF Case, which houses the TRP500-4450 Solid State Power Amplifier. When paired with a C-Band troposcatter antenna, the system provides a complete troposcatter communications solution in a rapidly deployable package.

The modular design allows users to take a building block approach to deployment, only utilizing the cases needed for a specific mission objective, with the ability to increase the power of the systems as those requirements change. The MC Case (paired with a C-Band antenna) can function as a stand-alone line of sight transmission system for short range and unobstructed links. The addition of a single RF case enables dual diversity troposcatter and diffraction links, for medium range and obstructed communications, and a second RF Case (with antenna) provides Quad Diversity troposcatter communications for maximum range.

The portable transit case design allows for more flexible deployment options than traditional trailer or vehicle based troposcatter systems. The MTTS cases can be carried to the top of a building or over terrain that is inaccessible by vehicles in order to optimize transmission paths, as well as be transported inside a helicopter or SUV if required.

Core System Elements [1 x MC Case / 1 x RF Case]

Support of Legacy Comtech Modems, including the TM-20

Having received questions relative to the availability and support of the Comtech Digital High capacitytroposcatter modem family includingthe TM-20modem, Comtech is supplying the followingclarification.

Comtech Systems is the world leader in troposcatter systems and has been for the past 50 years,delivering more high capacity systems (8 Mbps and greater) than any other company in the history oftroposcatter. A key Comtech Systems differentiator is that we also lead in the research anddevelopment of new troposcatter technology and techniques.

As a systems solution provider with a large installed base and whose core business is troposcatter,Comtech Systems has and continues to invest in future troposcatter technology development and inour product support services. This assures our customers that they will always have state-of-the-artequipment and that Comtech Systems will support our systems for the life of their applications.

Comtech Systems currently offers and supports only the S-575, and CS6700 series modems. Thisincludes the S-575 (8Mb/s), the advanced CS67200 and CS67500, and the US Military CS 6716 family of 22MB/s modems which are the most advanced modems in the market today. The US military haspurchased over 350 of the Comtech 6700 series modems to date and has effectively standardized onthe CS6700 modem family.

The TM-20 modem* was taken out of production in 2009, after extensive evaluations by Comtech andevaluation by the US Military. The superior performance of the Comtech designed modems alreadyin use, and the very limited sales and market acceptance of the TM-20 made the decision to ceaseproduction clear.

THEREFORE:

We understand that the Comtech TM-20 modem is still being offered in some markets as acurrent supportable modem. As a service to our current and potential troposcatter customers,Comtech wishes to clearly state its position on the TM-20.

Comtech values its name and reputation and wants to make sure that customers understandComtech’s position on its modem family.

*Comtech acquired all ownership rights to the TM-20 when it purchased Radyne Corporation (asatellite equipment manufacturer).

This listing is for new Westlake RP18 195/65R15 91H BSW Tires. Manufacturer part number: 24530041. The RP18 by Westlake is an all-season tire that's well equipped with a touring non directional tread and siping that provide year year-around performance. The low profile design assists in better steering response and handle, along with superior water dispersion. This tire is T,H, V rated and is available in a number of sizes.

Shipping

Shipping rates and estimated delivery times are available on tires after setting your delivery zip code. Tires ship via FedEx Ground and the shipment times are a very good estimate, although not an exact number of time-in-transit days. Tires are delivered Monday - Saturday. FedEx does not pick up orders on weekends or certain holidays. Once the tires are picked up, the time-in -transit estimate begins. If you place your order Friday afternoon, or on the weekend, your tires it will not ship until the following week. Currently we only offer FedEx Ground, expedited shipping is not available. Depending on when you place your order, there may be one, possibly two days of processing time. Shipping delivery times can be impacted by weather events across the country.

You can choose between 3 delivery options:

You will receive an e-mail confirmation of the transaction when you place your order. Please save a printed copy of your order confirmation for your records.

Overview

The RF IDeas pcProx Plus is a cutting-edge card reader that combines proximity and contactless technologies into one reader. It is a desktop reader that is capable of reading both 125 kHz proximity cards and 13.56 MHz contactless cards. This reader eliminates the need for manual entry and provides error-free identification and security throughout the workplace. The pcProx Plus allows users to use their building access card or any 125 kHz or 13.56 MHz tags/labels for other forms of identification.

The plug-n-play reader comes with flash memory, allowing users to quickly configure the output to meet their needs. With its dual-frequency multi-technology, the pcProx Plus is highly configurable and capable of simultaneously handling any two of the available technologies.

As a card and badge enroller or reader, it emulates a keyboard to keystroke the card’s data to the cursor’s location in an application. The reader can be configured to add keystrokes and commands before or after the card’s data.

The pcProx Plus reader can be used as a stand-alone unit, or can be seamlessly integrated with other software applications using the optional Software Developer Kit (SDK). As an integrated reader, it has the ability to work with a multitude of applications.

Features

Easy interface

USB models connect directly to a USB port and can be configured to send data as keystroking, non-keystroking or serial ASCII.RS-232 models connect to a serial port and send data as ASCII. Ethernet models connect through an RJ45 connection and are sent data as either ASCII or E/IP.